Nozzle



Dec. 12, 1961 G. G. ALLENBAUGH, JR

NOZZLE 2 Sheets-Sheet 2 Filed May 19, 1960 INVENToR. GEORGE G.ALLENBAUGH, JR.

BY. FOR am@ ,W4/mw W 7 ATTYS..

United States Patent C 3,012,733 Y NOZZLE George G. Allenbaugh, Jr.,Rittman, Ohio, assignor to Akron Brass Manufacturing Company, Inc.,Wooster, Ohio, a corporation of Ohio Filed May 19, 1960, Ser. No. 30,364

18 Claims. (Cl. 239-458) This invention pertains to ilre lightingnozzles of the type which may be adjusted to emit fluid in either astraight stream or a fog pattern. j

This is a continuation-in-part of United States patent applicationSerial No. 732,675 tiled May 2, 1958, now United States Patent No.2,938,673, issued May 31, 1960, and entitled Nozzle This patent is ateaching of a nozzle which may be adjusted from a wide angle fogposition to a straight stream position without having any effect on thevolume of water flowing through the nozzle. This is accomplished byproviding a baille head which is spaced a predetermined distance fromthe outlet end or' the nozzle conduit. This space is a constrictingoriiice which controls the rate of ilow through thenozzle and divertsthe water into a wide `angle fog dispersion. A slidable sleeve or chokeis telescoped over the conduit and shiftable longitudinally to aposition around the baille head and the orice. The choke, when in itsmost outward position, reconstitutes the iiow of water into a straightstream. The choke has a greater water carrying capacity, in'allpositions, than the orifice when the baille is positioned such apredetermined distance from the outlet.

In addition, the' nozzle of that patent has a baille head which isselectively shiftable longitudinally lrelative to the body of the nozzleto one of a plurality of positions of spaced gallonage controlrelationship with the outlet end of the body or conduit. Theseselectable positions are obtainable one at a time to obtain aconstricting throat of av predetermined and selected size. Thus, thenozzle taught in this reference patent provides selection of the amountof flow of water through the nozzle, or gallonage as it is known in theart. In addition, it provides a Vnozzle in which the gallonage, thoughconstant when in use, isa preselected one of a plurality of gallonages.

The nozzle of this invention has all of the described features of thereferenced patent and additional new and novel features as well. y

With prior art nozzles, especially of the type which may be used to emiteither a lfog or a straight stream, the presence of any dirt or foreignparticles in the tire fighting iluid can very materially hamper theeiliciency and operation of the nozzle. These particles tend to becomelodged in 4the oriiice between the baille head and the outlet end of thenozzle conduit. They cause both constriction of the rate of llow ofwater through the nozzle and distortion of the contour of an emittedstream, Further, a particle lodged in the orice can interfere with theadjustability of most prior nozzles and in addition can, in fact, causedamage to the nozzle.

With prior nozzles the presence of dirt particles such as pebbles lodgedbetween the baille head and the outlet end of the conduit has been adiilicult problem to correct. Considerable manipulation and adjustmentof the nozzle was usually resorted to in an attempt to 'free theparticle from the nozzle. This seldom proved to be a satisfactorysolution, and often particles could not be freed from the orifice untilthe line had been shut down and the nozzle disconnected from the line.With the nozzle disconnected, the operator could free the particle andcause it to reverse direction and come out the inlet end of the conduit.

With this invention a new and novel arrangement is provided in which thebaille head has a ilush-out position. The simple press of a button whilethe nozzle is in operaploded view and,

tion releases an interlock and allows the ilowing water to urge thebaille outwardly against the action of a spring to a ilush-out position.When the operator is satisfied that the foreign particles have beenpurged, he simply closes his shut-oil valve to stop the ow of water andallow the spring to return the baille to its operative position.Thereafter, he reopens the shut-off valve. With this simple operationvall foreign particles are purged, and the nozzle is immediately back intire lighting operation with absolutely no effect on either the streamcontour adjustment or the preselected gallonage adjustment.

Accordingly, one of the principal objects of the present invention is toprovide a novel and improved tire fighting nozzle in which a baille headmay be shifted from a stream control position to a ilushsout positiontoallow foreign particles to be purged from the nozzle.

In addition to the novel and simpliled ilush-out arrangement, thepresent nozzle provides a greatly increased eiliciency. The nozzle has athrough open substantiallyunobstructed passage. The spider, in lits moreor less conventional form, is vsubstantially eliminated. In lieu voftheusual spider, which forms a rather massive obstruction tothe llow ofwater through the nozzle passage, la series of longitudinally extendingspider arms which havel portions which are at least substantially'outside of the con# tour generated by the nozzle passage are provided.With the provision of these new and novel spider arms the vcapacity of anozzle of any givenv diameter is materially enhanced, and the loss ofpressure head 0f waterilowing through the nozzle is materially reduced.

, Accordingly, another principal-object of the invention is to provide anovel and improved nozzle construction inl which an open unobstructedpath of lluid llow throughout the nozzle body is provided, to provide agreatly improved eiliciency over prior known nozzles.

Another object of the invention is to provide a nozzlemade in accordancewith the foregoing objectives, which 1s also a constant gallonage nozzlewhen inoperation.

A related object of the invention is to provide a nozzle made inaccordance with all of the foregoing objectives in which the constantgallonage is one of a plurality'of preselected gallonages.

Still another object of the invention is to provide a nozzle in which abaille is shifted longitudinally and .rota-r 'Stillanother object oftheinvention is to provide a noz l zle which has a longitudinally shiftablestream choke selec= tively positionable around the baille head in whicha novel and improved detent selectively indexes the choke-into onel of aplurality of pattern adjustment positions` one at a time.

Other objects and a fuller understandingof the inven-l tion may be hadby referring to the following description andclaims taken in conjunctionwith the accompanying drawings in which: j

' FIGURE 1 isa partially sectioned side elevational view of the nozzle;I

FIGURE 2 is a partially sectional view of the outlet end of the nozzlein another adjustment position;

FIGURE 3 is a `sectional view of a portion of the noz-l zle showing thestream contour, cam and groove;

FIGURE 4 is a sectional view of the device-as seen from the planeindicated by the line 4 4 of FIGURE l; Y. FIGURE 5 is a fragmentary planview of the de teut ring; A Y

FIGURE 6 is a fragmentary partially sectioned and ex- Patented Dec. 121961 showingl the stream selection `mechanism;u

FIGURE 7 is a fragmentary sectional view showing the details of thebaffle head.A Y

Referring to the drawings, a nozzle body is shown generally at 10. Thebody 1l) is a conduit which has a through water passage 14 extendingIfrom an inlet end at 11 to an outlet end at 12. The outlet end at 12 isdefined by a throat collar 13 which is secured to and forms a part ofthe body 10. A ball-type shut-off valve 15 is provided near the inletend 11.

The body 10 has an internal bore 16 which is of substantially uniformcross-section and which extends from the throat collar 13 to a terminusnear the ball-type valve 15. A tubular holding sleeve 17 is positionedin the bore 16 at its inlet end. The holding sleeve 17 is normally heldin fixed relationship with the body 10 so that it functions, when thenozzle is in operation, as a part of the body or conduit member 10.

The holding sleeve 17 includes a longitudinally extending positioninggroove 18. A positioning pin 19 is carried by the body 10 and projectsinto the groove 18. The pin 19 coacts with the ends of the groove 18 tolimit relative longitudinal travel of the holding sleeve 17 relative tothe body 10.

A spider member composed of a tubular sleeve portion 20 and a pluralityof spider arms 21 is provided. The spider sleeve portion 20 is disposedwithin the bore 16 and positioned essentially between the holding sleeve17 and the collar 13. The sleeve portion 20 is a support portion for thearms 21. The spider member is interconnected with the holding sleeve 17and selectively relatively movable, in a fashion that will be describedbelow, to obtain a preselected gallonage.

The holding sleeve 17 has a bore 23, which is of a diam` etersubstantially equal to the inside diameter of the spider sleeve portion20. The bore 23 and the spider sleeve portion 20 define a uniformdiameter portion of the passage 14, which provides advantages which willbe discussed below.

The holding sleeve 17 is counterbored at 24 adjacent its outlet end.Inlet end 25 of the spider sleeve portion 20 is telescoped into thecounterbore 24. A gallonage control positioning spring 22 is interposedbetween the base of the counterbore 24 and the end 25 of the sleeveportion 20 to urge the sleeves away from one another. The holding sleeve17 includes a pair of radially extending indexing projections 26. Theindexing projections 26 extend into locating slots 27 formed in thespider sleeve portion 20. Each of the locating slots 27 includes lowgallonage stop walls 28 and spaced high gallonage stop wall 29. Theindexing projections 26 are selectively abutable one at a time againstthe spaced stop walls 28, 29 to provide a predetermined spacedrelationship of the spider member and the holding sleeve 17. The lowgallonage position is `shown in solid lines in FIGURE 1 while the highgallonage position is shown in FIGURE 2.

An enlarged bafe head 30 is secured to the spider arms 21 of the spidermember such that the head, the spider member, and the holding sleeve 17all coact together as one unitary element which may be referred to as aspider and bame means. The baille head 30 is disposed across the outletend of the conduit. The baille head 30 is of a diameter greater than thediameter of the through water conduction passage 14 adjacent its outlet.

The baille head 30 is spaced, when in a gallonage control position, froma truncated flow control surface 31 on the throat collar 13. The baillehead 30 and the truncated surface 31 coact to define a flow controlconstricting oritice or throat when the baille head is in one of thepreselected gallonage control positions. The baille head and the surface31 also coact to impart the maximum fog characteristic to a flow ofwater through the nozzle.

A tubular stream choke sleeve 33 is telescoped over the body 10 near theoutlet end 12. The stream choke 33 is selectively positionable in theposition shown in FIGURE 2 to reconstitute the ow of water into astraight stream.

The stream choke 33 may be shifted longitudinally from the maximum fogposition of FIGURE 1 to the straight stream position of FIGURE 2, and ifdesired, positioned at a location intermediate these two positions toprovide an intermediate fog dispersion.

To impart a longitudinal relative shifting of the stream choke 33relative to the body 10 upon relative rotation of the two, a cam groove34 is provided in the stream choke 33. A cam follower member 35 isconnected to the body 10. The cam follower member 35 extends into thegroove 34 to coact with the walls of the groove. This coaction causesrelative longitudinal shifting of the choke and body 33, 10 when thereis relative rotation of the choke and body.

The choke is indexed into one of a plurality of stream contour controlpositions one at a time by a new and novel arrangement. This new andnovel arrangement includes an annular detent ring 32 which ispositioned, in the disclosed embodiment, in a recess in the streamchoke. The recess is actually obtained by providing a ring 36 which hasan inwardly directed flange 37 overlying the detent ring 32. The ringalso serves as a stream adjustment indicia ring. The ring has aplurality of adjustment position indicating apertures (not shown) formedthrough it. A colored plastic 38 is interposed between the ring 36 and aportion of the choke 33 making the positioning apertures readily andpermanently visually discernable.

The detent ring 32 has a plurality of spaced indexing recesses 40. Aspring-urged detent ball 41 is carried by the stream choke 33` forselective engagement with the detent recesses 40 one at a time.

The detent ring 32 has an inwardly extending projection 42 which isdisposed in and coacts with the walls of the longitudinally extendingguide groove 43, -FIGURE 3. The guide groove 43 is formed in theperipheral surface of the body 10.

Upon relative rotation of the choke 33 relative to the body 10, theprojection 42 will prevent rotation of the detent ring 32 relative tothe body 10. The overlying flange 37 and the remainder of the streamchoke 33 will cause the ring and the projection 42 to reciprocate withthe choke to the groove 43. At the same time, since the choke 33 willrotate relative to the detent ring 32, the detent ball 41 will rotatewith the choke and be caused to shift from one of the detent recesses 40to a contiguous recess.

The features which permit the baille 30 to be substantiallyinstantaneously shifted from either the low gallonage control positionshown in solid lines in FIGURE l, or the high gallonage control positionof FIGURE 2 to the flush-out position shown in phantom in both figures,provides one of the outstanding advantages of the invention.

A flush-out control spring 50 circumscribes the sleeve portion 20 of thespider member and is interposed between the collar 13 and the holdingsleeve 17. The flush-out control spring 50 urges the sleeve 17rearwardly until the end of the locating slot 18 nearest the outlet end12 is in abutting contact with the pin 19. When this contact isobtained, a recess S1 formed in the peripheral surface of the holdingsleeve 17 is in alignment with a portion of a slot 52 which extendsthrough the wall of the body 10.

A locking ball 53 is provided which normally extends into the recess 51to rigidly interconnect the body 10 and the holding sleeve 17 andprevent relative longitudinal movement of the two against the action ofthe flush-out spring 50. Thus, the ball 53 normally locks the body andholding sleeve together rendering the spring 50 ineffectual. A saddle 54including a ball camming surface 55 is positioned in the slot 52. A lockcontrol spring 56 is interposed between the saddle S4 and the body 10.The lock control spring 56 urges the saddle 54 circumferentially againststop wall 57 of the slot 52.

A saddle control knob 59 is secured to the saddle 54. Pressing of thesaddle control knob 59 to shift the saddle and compress the spring 56will shift the camming surface 55 out of engagement with the lockingball 53 and permit the locking ball 53 to shift laterally out of thegroove 51. This lateral shifting of the locking ball 53 out of thegroove 51 will occur when the nozzle is turned on.

When the saddle 54 is shifted circumferentially with the nozzle turnedon, the ilow of water pressure acting against the baille head 30 willcause an axial shifting of the baille head Sil, to theV right as seen inthe drawings. This axial shifting of the baille 30 will, of course,cause the spider member and the holding sleeve 17 to shift with it. Thisshifting of the holding sleeve 17 will urge the locking ball 53laterally outwardly. The amount of axial shifting to the right islimited by the coaction of a stop shoulder 60 on the spider sleeveportion 20 and the collar 13. While the pin 19 will normally not contactthe end of theslot 18 nearest the inlet 11, the pin 19 may come incontact with the end of this slot 18 if inertia of the sleeve 17 tendsvto cause it to travel somewhat more than the Spider member against theaction of the gallonage control spring 22.

So long as the` water pressure is maintained, the nozzle willl remain inthe ilush-out position shown in phantom in FIGURES l and 2 of thedrawings. When the baille is at this outer or extended flush-outposition, it is widely spaced yfrom the collar 3l a distance greaterthan either of the gallonage control positions of the solid lines ofFIGURES l and 2. Upon closing of the valve 15 to stop the flow of thewater, the flush-out control spring 50 will urge the holding sleeve 17and the connected spider member and the baille head 30 axially to theleft until the positioning pin 19 strikes the outlet end of the groove18. At this time the recess 51 will be again in alignment with thegroove 52.' If the control button 59 has been released, the action ofthe locking control spring 56 urging the saddle circumferentially willcause the camming surface 55 to cam the lock ball'53 back into therecess 51. As soon as the shut-oil valve is closed, the nozzleautomatically and substantially instant-aneously returns to theoperating condition which existed prior to the ilush-out operation. Theadjustment of the stream choke 33` or the baille 30, which was madebefore the -ilush-out operation, is completely uneilected by theilush-out.

Thus, instantaneous simple ilush-out is obtained which can be performedsimply and accurately by an operator. All an operator needs to do ispress the button 59 to cause the nozzle to ilush. When he is satis-fiedthat the foreign matter is purged, he simply closes and immediatelyreopens the shut-oil valve 15.

l The described nozzle will be seen to have a number of advantages.Among these is the faot that all adjustments are obtained by an operatorwith one hand. By this is meant that he always has one hand free toirmly grip the 'nozzle while making -anyA adjustment operation.

If an operator wishes to adjust gallonage, he first shuts off'the nozzleand then presses in on the baille 30 against the action of the gallonagecontrol spring 22. He then rotates'the baille 30 while the spring 22 isso depressed to bring the indexing member 26 into engagement with t-heappropriate stop 28 or 29. The principles of this selection and thereason for its obtainment only when the water is-shut oit are explainedin greater detail in the referenced patent.4

The stream choke is simply and expeditiously adjusted with one hand,while the nozzle is gripped ilrmly with the other. Likewise, theball-type shut-oil valve is simply and expeditiously actuated by onehand while the ilush-out mechanism may be operated by one linger.

Clearly all of these vadjustments require only one hand for theVadjustment while the other is gripping the nozzle. Thus, this nozzle,unlike many of the prior art nozzles, can be simply operated by a singleilreman with a minimum of training.y

While the invention has been described in a great deal of detail, it isbelieved that it essentially comprises a ilre lighting nozzle in theform of a conduit member `having-a through iluid passage,.a spider andbaille means inthel passage with a baille head across the outletl andreleasable lock means interposed between lthe baille head and theconduit'to permitthe baille head to be selectively shifted from thegallonage control position to another position a.

further distance from the conduit. The invention also inclndes a noveland improved arrangement where a substantially obstruction-free ilowlcontrol, passage is provided.

Although the invention has been described in its lpreferred 4form with acertain degree of particularity, it is l. A ilre ghting nozzlecomprising, a conduit member. having a through fluid passage extendingfrom an inlet to an outlet, a spider and baille means connected to theconduit member, the spider and baille means including a baille head of adiameter greater-than the passage outlet positioned across the outletwhen the nozzle is in use, a stream contour control sleeve membertelescoped over said conduit member adjacent the outlet end, the membersincluding coacting means to cause relative longitudi-l nal movement uponrelative rotation thereof, an annular detent ring rotatably carried byone of :the members, the

other of the members having a longitudinal groove therein, said ringincluding an extension portion disposed in said groove to cause saidring to rotate with said other member relative to said one member, saidone member and said ring being coacting elements, one of the elementshaving a plurality of spaced stream locating recesses formed therein andthe other having a spring loaded detent selectively engageable with saidrecesses one at a time.

2. The device of claim 1 wherein said coacting means comprises a camVgroove yformed in the sleeve member and a cam follower secured Ito theconduit member and projecting into the groove.

3. A nozzle comprising, an elongated tubular body member having athrough passage extending from an inlet end -to an outlet end, a holdingmember carried by the body member intermediate the ends, the membersbeing selectively movable longitudinally, one of the members including agroove having longitudinally spaced inlet and outlet ends, the othermember having a pin projecting into the groove and coaetable with theends of the groove one at a time to limit relative longitudinal movementof the mem-bers, a ilush-out biasing means interposed between themembers and urging the holding member toward the inlet to urge said pinagainst said'groove Vinlet end, said holding member including a recessinthe peripheral surface thereof, 'lock means carried by the body inalignment with said recess when said pin and groove inlet end are inabutment, lock biasing means urging the lock means into engagement 'withthe recess when the locking means and recess are in alignment, said lockbiasing means being compressible to permit the look means to shifttoutof engagement with the recess, a spider means including a supportportion disposed in said passage, said spider means including aplurality of yarms extending longitudinally from lthe support portionpast the outlet end of ythe body, a baille head secured to the spiderarms and having a plurality of selectable ilow control positions spacedfrom the end of Ithe body to deilne a ilow control oriice of selectablesize therebetween, said holding vmember and said support portion beingcoacting elements, one of the elements having at least one group of atleast two longitudinally spaced locating stops, the other of theelements having one indexing surface for each such group, each suchindexing surface being selectively abuttable against the locating stopsof one group one at a time, said elements being relatively rotatable andrelatively movable longitudinally to permit each such indexing surfaceto selectively abut the locating stops of one group one at a time andthereby shift the head into a selected one of said gallonage controlpositions, element biasing means interposed between the holding elementsand urging the elements `away from one another and each indexing surfaceagainst the selected stop, a stream` control sleeve telescoped over saidbody adjacent the outlet end and including means coactable with the bodyto cause relative axial rotation thereof, said sleeve being positionablearound said orifice and said baille head and having a greater watercarrying capacity than said orifice at all times when the baille is inone of said flow control positions, and said baille having a ilush-outposition; said baille, said holding member, and said spider means beingshiftable together from the selected one of said flow control positionsunder the urging of water pressure and against the action of saidilush-out biasing means upon compressing the lock biasing means topermit lock means to shift out of engagement with the recess.

4. A nozzle comprising, an elongated tubular body having a throughpassage extending `from an inlet end to an outlet end, a tubular holdingsleeve disposed within the body passage intermediate the ends andselectively movable longitudinally relative to the body, the body andthe holding sleeve including first coactable abutment sur-faces limitingrelative longitudinal movement in one direction and second coactableabutment surfaces limiting relative longitudinal movement in the otherdirection, a ilush-out spring interposed between the holding sleeve andthe body and urging the holding sleeve toward the inlet to urge saidfirst coactable surfaces into abutment, said holding sleeve including arecess in the peripheral surface thereof, the body including atransversely disposed slot in alignment lwith said recess when saidfirst coactable surfaces are in abutment, a ball in said slot andprojectable into said recess when said first surfaces are in abutment, amovable saddle in said slot and having a ball camming surface, a lockingspring interposed between the saddle and the body and urging saidcamming surface against said ball and locking the ball in engagementwith said recess when the slot and recess are in alignment, a spidermember including a tubular sleeve portion disposed in said passage andtelescoped in part within said `holding sleeve, said spider memberincluding a plurality of arms extending longitudinally from the sleeveportion past the outlet end of the body, `a baille head secured to thespider arms and having a plurality of spaced and selectable ilow controlpositions spaced from the outlet end of the body to define a ilowcontrol orifice of selectable size therebetween, one of the sleeveshaving at least one group of at least two longitudinally spaced locatingstops, the other of the sleeves having one indexing surface for eachsuch group, each such indexing surface being selectively abutableagainst the locating stops of one group one at a time, said sleevesbeing relatively rotatable and relatively movable longitudinally topermit each such indexing surface to selectively abut the locating stopsof one group one at a time and thereby shift the head into a selectedone of said gallonage control positions, a gallonage spring interposedbetween the holding sleeves and urging the sleeves away from one anotherand each indexing surface against the selected stop, said baille having`a flush-out position; said baille, said 'holding sleeve, and saidspider member being shiftable together from the selected one of saidflow control positions under the urging of water pressure and againstthe action of said flush-out spring upon shifting of said saddle againstthe locking spring to permit the ball to shift laterally outwardly fromthe recess, a stream control sleeve telescoped over said body adjacentthe outlet end and including means coactable with the body to causerelative axial rotation thereof, said sleeve being positionable aroundsaid orifice and said baille head and having a greater water carryingcapacity than said orifice at all times when the baille is in one ofsaid ilow control positions.

5. The device of claim 4 wherein a shut-oil valve carried by the body isinterposed between the inlet and the holding sleeve.

6. A fire lighting nozzle comprising, a conduit member having a throughiluid passage extending from an inlet to an outlet, a spider and baillemeans carried by the conduit member, the spider and baille meansincluding a baille member of la diameter greater than the passageoutlet, Said spider and baille means being positioned to maintain thebaille across the outlet when the nozzle is in use, releasable lockmeans interposed between the members to selectively interconnect themembers to maintain the baille member across and spaced from the passageoutlet in a stream contour forming position, biasing means interposedbetween the baille and the conduit and urging the baffle towards theconduit, said lock means interconnection being releasable to permit thebaille member to shift away from the outlet to a ilush-out positionagainst the action of the biasing means yand under the urging of thepressure of water conducted by the conduit, and said conduit includingmeans coactable with the baille when the baille is in said streamforming position to adjustably control the contour of an emitted stream.

7. A iluid nozzle for fire fighting comprising, a conduit element havinga fluid passage extending from an inlet to an outlet, a baille assemblycarried by the conduit element and positioned at least in part withinthe passage, said assembly including a baille head of a greater diameterthan theV outlet and positioned adjacent the outlet, a stream chokecarried by the conduit element and selectively positionable around saidbaille head, said choke when around said head defining an extension ofsaid passage, said assembly including an element, one of the elementsincluding at least one recess, a recess engaging member carried by theother element and selectively movable into and out of engagement withone such recess, said elements being locked against relative axialmovement when the member is engaged with such one recess, a springinterposed between the member and. said other element and biasing themember toward such one recess, said baille head having at least onegallonage control position in predetermined spaced relationship withsaid outlet to deilne a constricting throat when the member is engagedwith such one recess, said baille head and conduit being relativelyshiftable axially to a flush position with the space between the headand outlet having a greater water carrying capacity when the member isdisengaged from one such recess, and said choke lwhen positioned aroundthe bale head having a greater water carrying capacity than the throatwhen the baille head is in one such gallonage control position and thespace between the baille head and the outlet when the head is in theflush position having a greater water carrying capacity than the crosssectional area of said passage in at least one plane of cross sectionsuch that the amount of water flowing through the nozzle when in theflush position is controlled by the passage area in such planek of crosssection.

8. The device of claim 7 wherein the baille head has a plurality ofgallonage control positions and wherein baille assembly includes meansto index the head into the gallonage control positions one at a time.

9. The device of claim 7 wherein the baille assembly element is saidother element and is an annulus circumscribing said iluid passage.

10. A fire fighting nozzle comprising, a conduit member having a throughfluid passage extending from an inlet to an outlet, a spider and bailleymeans carried by the conduit member, the spider and baille meansincluding a baille member of a diameter greater than the passage outlet,said bafile member having at least one gallonage control position inpredetermined spaced relationship with said outlet to detine aconstrictin-g throat therebetween, a choke carried by the conduit andpositionable around the bathe member, said choke when positioned aroundthe bathe forming :an extension of said passage and having a great-erVwater carrying capacity than said constricting throat, releasable llockmeans interposed between the members to selectively and rigidlyinterconnect the members to maintain the bathe member inveach suchpredetermined gallonage control position, a spring interposed betweenthe lock means and one of the members and biasing said `lock means intosaid interconnection, said lock means being movable against the actionof the spring to release such interconnection, said bathe member havinga flush position widely spaced from said outlet, the space between thebathe member and the outlet when the bathe member is in the flushposition having a greater water carrying capacity vthan thecross-sectional area of said passage in at least one plane of crosssection such that the amount of water owing through the nozzle when inthe tiush position is controlled by the passage area in such plane ofcross section, andthe bathe member being shi-ftable away from the outletfrom said gallonage control position to said flush position when saidlock means Iis moved against the action of the spring to release theinterconnection.

11. A tire fighting nozzle comprising, a conduit member having a throughfluid passage extending lfrom an iniet to lan outlet, a spider and bathemeans carried by the conduit member, the spider and bathe meansincluding a bathe member of a diameter greater than the passage outlet,said spider and bathe means being positioned to maintain the bathemember across the outlet when the nozzle is in use, Ia choke carried bythe conduit and positionable around the bathe, said spider and saidbathe means including a recess, a laterally shiftable ball selectivelyengageabile with said recess, a spring urged saddle carried by theconduit urging the ball inwardly into the recess when the members areselectively interconnected and selectively shiftable yagainst the springaway from the bail to permit the ball to shift laterally out of saidrecess and thereby release said interconnection, said lbathe memberbeing across and spaced from the passage outlet in a predetermined-gallonage position when the members are interconnected by the ball todefine a. constricting throat of a constant value of less water carryingcapacity than said choke, Iand said bathe member being shiftable awayfrom the outlet to another position of a predetermined capacity Igreaterthan said choke.

12. A tire lighting nozzle comprising, 4a conduit member having athrough huid passage extending from an inlet to an outlet, a spider andbathe means carried by the conduit member, the Spider and bathe meansincluding a bathe member of a diameter greater than the passage outlet,said spider and bathe means being positioned to maintain the bathemember across the outlet when the nozzle is in use, a choke carried bythe conduit and positionable around the bathe, said spider and bathemeans including -rst and second relatively movable sleeves, and a springinterposed therebetween, one of said sleeves including a plurality ofspaced stops and the other including at least one indexing portion, eachsuch indexing portion being selectively engageable with the stops one:at a time to locate the bathe member in one of a plurality of spacedgallonage control positions, releasa'ble lock means interposed betweensaid conduit member and said tirst sleeve to selectively, rigidly,interconnect said conduit member and said tirst sleeve to maintain thebathe member across and spaced from the passage outlet in the selectedone of said plurality of predetermined gaillonage control positions,thereby defining a constricting throat of constant value of less watercarrying capacity than said choke, and said lock means interconnectionbeing releasable to permit the bathe member to shift away from theoutlet to another position of predetermined capacity greater than saidchoke.

13. In `a nozzle the combination of, "aV conduit Vextending from kaninlet to an outlet, a spider means connectedftoI said conduit, Ia bramehead connected to the spider means` and positioned acrossthe outlet,resilient means. interposed between the head and the conduit and"vurging theV head toward the conduit, asaddle' carried bythe conduit', aSpring between the saddle andthe conduit biasing the saddle into aninterconnecting position, said spider means having a recess therein, aball urged into the recess by the saddle when the saddle is in theinterconnecting position, said head and conduit'being maintained in a'predetermined spaced relationship whenrthe ball is urged into therecess by they saddle, and saids'addlebein'g movable against the lactionofthe spring to release theball and permit the bathe to be shiftedoutwardly by water pressure against the action of the resilient means.'f .f

14. The device of claim 10 wherein said bathe men'iberjv has a pluralityof gallonage cont-rol positions andV is positionable selectively one `atay time in such gallonage'control positions. i

15. The device of claim lOwherein said bathe member' is -a circular headand wherein the spider yand bathe means includes an annular portionspaced rearwardly of the conduit outlet and at least one ylongitudinallyextending member connecting the head to the -annular member.

16. In a nozzle the combination of, a conduit extending from an inlet toan outlet, a spider means connected `to said conduit, a bathe headconnected to the spider means and positioned across the outlet,resilient means interposed between the head and the -conduit and urgingthe head toward the conduit, releasable lock means interposed betweenthe head and the conduit and normally rigidly and positivelyinterconnecting the head and conduit in an operative position tomaintain predetermined spaced relationship therebetween and render theresilient means inetectual, and said lock means being releasable torender the releasable means effectual to permit the bathe to be shiftedoutwardly by water pressure against the action of the resilient means,and biasing means urging the lock means into such normal interconnectionof the head and conduit.

17. A fluid nozzle for tire lighting comprising, a conduit elementhaving a huid passage extending from `an inlet to an outlet, a batheassembly carried by the conduit element and positioned at least in partwithin the passage, said assembly including a bathe head of a greaterdiameter than the outlet and positioned adjacent the outlet, a streamchoke carried by the conduit element yand selectively positionablearound said bathe head, said assembly including an element, one of theelements including at least one recess., -a recess engaging membercarried by the other element and selectively movable into and out ofengagement with one such recess, said elements being locked againstrelative axial movement when the member is engaged with such one recess,a spring interposed between the member and said other element andbiasing the member toward such one recess, said bathe head having atleast one gallonage control position in predetermined spacedrelationship with said outlet to define a constricting throat when themember is engaged with such one recess, said bathe head and conduitbeing relatively shi-ftable axially to a hush position with the spacebetween the head and outlet having a greater 'water carrying capacitykwhen the mem-ber is disengaged fromone such recess, and said choke whenpositioned around the bathe head having a greater watercarrying'capacity than the throat when the bathe head is in one suchgallonage control position and a lesser water carrying capacity than thespace between the bathe head and the outlet when the head is in theflush position. i

18. A tire fighting nozzle comprising, a conduit member having a throughfluid passage extending from an inlet to an outlet, a spider and bathemeans carried by the conduit member, the spider and bathe meansincluding a bathe member of a diameter greater than the passage out- 1 1let, said battle member having at least one gallonage control positionin predetermined spaced relationship with said outlet to define aconstricting throat therebetween, a choke carried by the conduitandpositionable around the bafe member, said choke when positionedaround the bafe having a. greater water carrying capacity than saidconstricting throat, releasable lock means interposed between themembers to selectively vand rigidly interconnect the members to maintainthe bafe member in each such predetermined gal-lonage control position,a spring interposed between the lock means and one of the members andbiasing saidv lock means into said interconnection, said lock meansbeing movable against the action of the spring to release suchinterconnection, said baie member having a flush position` widely spacedfrom said outlet, the space between the bae member `and the outlet whenthe bafe member is in the fiush position having a greater water carryingcapacity than said choke when positioned around the baie member, and the-baie member being shiftable away from the outlet Ifrom said gallonagecontrol 2 12 moved against the action of the spring to release theinterconnection.

References Cited in the le of thisl patent UNITED STATES PATENTS 664,893Peterson Jan. 1, 1901 1,705,305 Northrop Mar. 12, 1929 1,847,404 LynchMar. 1, 1932 1,969,954 Taylor Aug. 14, 1934 2,149,930 Plast-aras Mar. 7,1939 2,552,444 Nielsen May 8, 1951 2,552,445 Nielsen May 8, 19512,582,527 Burnett Jan. 15, 1952 2,797,134 Fuller June 25, 1957 2,820,673Zubaty Jan. 21 1958 2,938,673 Allenbaugh May 31, 1960 FOREIGN PATENTS25,814 Great Britain Nov. 15., 1906 130,614 Sweden Jan. 23, 1951 864,842Germany Jan. 29 1953

